NAVIGATION SYSTEM, Diagnostic DTC:B15DB

DTC Code DTC Name
B15DB Telematics Transceiver Disconnected

DESCRIPTION

If the radio receiver assembly cannot detect the telematics transceiver for a certain period of time (15 seconds) after the engine switch is turned on (ACC) and the radio receiver assembly confirms that the information is missing by checking past telematics transceiver recognition information (registered information), this DTC will be stored.

The telematics system uses USB communication between devices. If an open, short, short to +B or short to ground occurs in the USB circuit, communication is interrupted and the telematics system will not operate normally.

DTC No. Detection Item DTC Detection Condition Trouble Area
B15DB Telematics Transceiver Disconnected Telematics transceiver disconnected

  • Harness or connector

  • Telematics transceiver

  • Radio receiver assembly

Tech Tips

This DTC may be stored due to environmental reasons such as electrical noise or interference.

WIRING DIAGRAM

A01VRVFE01

CAUTION / NOTICE / HINT

Note

Inspect the fuses for circuits related to this system before performing the following procedure.

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (TELEMATICS TRANSCEIVER POWER SOURCE)


    1. Disconnect the O150 telematics transceiver connector.

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      O150-4 (E) - Body ground Always Below 1 Ω

    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Condition Specified Condition
      O150-1 (+B) - O150-4 (E) Always 9.5 to 14 V
      O150-8 (ACC) - O150-4 (E) Engine switch on (ACC) 9.5 to 14 V
      O150-7 (IG2) - O150-4 (E) Engine switch on (IG) 9.5 to 14 V
      Result
      Proceed to
      OK
      NG

    NG

    GO TO STOP AND START SYSTEM Click here

    OK

  2. INSPECT RADIO RECEIVER ASSEMBLY


    1. Disconnect the O145 radio receiver assembly connector.

    2. A01VR6DC12
      *a

      Component without harness connected

      (Radio Receiver Assembly)

      Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      O145-2 (USBG) - Body ground Always Below 1 Ω

    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Condition Specified Condition
      O145-4 (USBV) - O145-2 (USBG) Engine switch on (IG) 4.75 to 5.25 V
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE RADIO RECEIVER ASSEMBLY Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - TELEMATICS TRANSCEIVER)


    1. Check the installation condition.


      1. Check the USB communication line (digital communication line) between the radio receiver assembly and telematics transceiver for any installation or connection problems.

    2. Disconnect the O145 radio receiver assembly connector.

    3. Disconnect the O146 telematics transceiver connector.

    4. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      O145-1-2 (USB+) - O146-1-2 (USB+) Always Below 1 Ω
      O145-1-1 (USB-) - O146-1-1 (USB-) Always Below 1 Ω
      O145-1-3 (USBS) - O146-1-3 (USBS) Always Below 1 Ω
      O145-4 (USBV) - O146-4 (USBV) Always Below 1 Ω
      O145-2 (USBG) - O146-2 (USBG) Always Below 1 Ω
      O146-1-2 (USB+) - Body ground Always 10 kΩ or higher
      O146-1-1 (USB-) - Body ground Always 10 kΩ or higher
      O146-1-3 (USBS) - Body ground Always 10 kΩ or higher
      O145-4 (USBV) - Body ground Always 10 kΩ or higher
      O145-2 (USBG) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. REPLACE TELEMATICS TRANSCEIVER


    1. Replace the telematics transceiver with a new or known good one.

      Click here

    2. Clear the DTCs.

      Click here


      Body Electrical > Navigation System > Clear DTCs

    3. Recheck for DTCs and check that no DTCs are output.


      Body Electrical > Navigation System > Trouble Codes
      OK
      No DTCs are output.
      Result
      Proceed to
      OK
      NG

    OK

    END

    NG

    REPLACE RADIO RECEIVER ASSEMBLY Click here